There are many ways of offering support:

1-. The Floyd Family:

https://www.gofundme.com/f/georgefloy...

2-. Black Lives Matter:
Donations can be made directly to the Black Lives Matter Global Network, and their “ongoing fight to end state-sanctioned violence, liberate Black people, and end white supremacy forever”.

https://secure.actblue.com/donate/ms_...

3-. Other Victims:
There are active funds for the many victims of racial violence around the world.
https://blacklivesmatters.carrd.co/#v...

4-. To Fight Racism In the UK:
Show Racism The Red Card is the name of an anti-racism charity in the UK. The charity provides resources, runs school workshops and uses high-profile public role models to educate people in Britain about ongoing racism.
https://www.justgiving.com/theredcard